{"nhtsa_id":10183567,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-12-04","date":"2020-11-09","document_id":"SSM 49318","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT","mfr_system":null,"summary":"For 2011-2020 F-150/Mustang vehicles equipped with a 5.0L engine when installing a replacement secondary timing chain tensioner (6K254) or secondary timing chain guide (6K297), it is necessary to replace both components as a pair, using the latest level parts. Make sure to use secondary timing chain tensioner part number ML3Z-6K254-A and secondary timing chain guide part number ML3Z-6K297-A.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10183567-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10183567-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10183567","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-150","year_from":2011,"year_to":2020,"match":"exact","vehicle_ids":["2011_ford_f-150","2012_ford_f-150","2013_ford_f-150","2014_ford_f-150","2015_ford_f-150","2016_ford_f-150","2017_ford_f-150","2018_ford_f-150","2019_ford_f-150","2020_ford_f-150"]},{"make":"FORD","model":"MUSTANG","year_from":2011,"year_to":2020,"match":"exact","vehicle_ids":["2011_ford_mustang","2012_ford_mustang","2013_ford_mustang","2014_ford_mustang","2015_ford_mustang","2016_ford_mustang","2017_ford_mustang","2018_ford_mustang","2019_ford_mustang","2020_ford_mustang"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}